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(No Model.)

W G. KENT.

ROTARY METER. No. 361,529. PatentedApr. 19, 1887.

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UNITED `STATES PATENT OFFICE.

VALTER G. KENT, OF 199 HIGH HOLBORN, COUNTY OF MIDDLESEX,

` ENGLAND.

ROTARY lVl ETE R.

.5'PECIFICJl-LI'ION- forming part of Letters Patent No. 361,529, datedApril 19,1887.

Application tiled July 26, 1886.

T 0 @ZZ w/"tom, it may concern:

Be it known that I, WALTER GEORGE KENT, a subject of the Queen of GreatBritain, residing at 199 High Holborn, in the county of MiddleseX,England,manufacturer, have invented certain new. and useful Improvementsin or relating to Meters for Measuring Liquids, of which the followingis a specification.

This invention has for its object au improved water or liquid meter.This meter is animprovement on that patented in the United State ofAmerica by Frank Walker, of Tombstone, Arizona Territory, assignor tothe Keystone' Vater Meter Manufacturing Company, (Limited,) ofPennsylvania, on the 15th day of J uly, 1884., No. 302,179.

My improvement, hereinafter specified by the claims, relates to a meterof the class in which, instead of connecting the supply-pipe directly tothe inlet-chamber of the meter and the delivery-pipe directly to theoutlet-cham ber, a separate casing is provided. It is in two parts, andthe supply and delivery pipes are permanently lined to the lower part.The upper part is domed and fits onto the lower part as a-cover and isreadily movable. The body of the meter is received into the lower part,and forms a partition between the interior capacity of this part and thecavity in the upper part or cover.

The body of the meter is cylindrical, and so, also, is the casing whichreceives it. Thereis a small annular space between them, and with thisthe inlet-pipe is connected by a radial aperture through the side of.-the casing. Thus any rush of the inlet-water is effectually broken. Thedelivery-pipe, although attached to the lower part of the casing, doesnot communicate with its interior cavity, 'but with a passageterminating in an aperture in its''ange. In the ilange of the coverthere isacorresponding aperture, which is the mouth of an outletpassagein connection with the cavity of the cover. The water ascends within thelower part'of the casing through a strainer attached beneath the body ofthe meter. It enters the body of the meter through apertures in thebottom. It then traverses the working-chamber, and so finds its Way intothe cavity of the I improvet-he working of the meter, rendering the flowmore uniform and thereby avoiding shocks, and also preventingjammingofthe piston by grit, which in the original form may occur, by somewhataltering the interior form of the working-chamber.

In the meter described in the former specication to which I havereferred, (No. 302,179,) the working-chamber is so formed that the parttermed the piston77 makes one-half of a rotation about the centralpostor stud and then moves radially upon the post or stud, and the formof the case and piston is such as to permit of no other movement. I nowmake the part of thecase on which the end of the pletes itssemi-rotation of such a form as to compel the commencement ofthe radialmovement when the piston comes into contact with this part, and I alsomake the side of the piston so -that it becomes free for the radialmovement before the end ot' the rotary movement, in place of the pistonbeing retained, as heretofore, until the rotary movement is fullycompleted.

, In order that mysaid invention may be t'ully understood and readilycarried into effect, I

annexed.

In the drawings, Figure l is an elevation of the improved water orliquid meter. Fig. 2 is a plan of the same. Fig. 3 is a vertical sectionof the same with the piston and counter' removed. Fig. 4 is a plan withthe cover of the casing and the top plate of the body of the meterremoved. Fig. 5 is a plan of the top plate.

A is the lower cylindrical part of the casing of the meter. Theinlet-passage is at A, and the delivery-passage at A". Pipe-connections\are made with the passages A and A2 in any convenient way.

B is the domed upper part ot' the casing. Its interior capacity isplaced in communication by a passage,B, with the delivery-passage A2 ofthe lower part of the casing. n

B2 is a plate on which the ordinary counter is built. The indicatingwheels or disks are on the upper side of the plate B2, and are conpistonabuts shortly before the piston comwill proceed to describe the drawingshereunto 5o cover and passes away by` the delivery-pipe. tained in thecavity B3. This cavity is proroo vided with a cover. One of the axes ofthe counting-train passes through a gland or Water-tightjoint in theplate B2.

C is the cylindrical body of the meter. It is flanged and the iiange isreceived into a recess in the top of the part A, so that when the partsare in place and the cover bolted on the body of the meter forms apartition separating a lower cavity in the part A from an upperca/vityin the part B. The water entering at A strikes upon the body G,divides, and passes around it. It also slowly descends around the wallsof the casing A, and it then rises a gain through the perforatedstrainer AX. These conditions are very favorable to the deposit of gritat the bottom of the casing in preference to carrying it forward intothe body of the meter.

The water enters the body of the meter by the holes C and C. The firstof these opens into a chamber, C, called the inlet-chainber,7 and thelatterinto a chamber, 0*, called the working-chamber.77 The water alsosimultaneously passes into the working-chainber by way of theinlet-chaniber C3, the aperture Ga, the passage C6, and aperture Cl,for, as heretofore, admission both above and below the pistonisprovided. The water escapes from the Working-chamber into the cavityof the cover B directly by the hole C8, and also simultaneously by the'lower aperture, C, the passage O10, the opening Guin the bottom of achamber, C, called the outlet-chamber,77 and by a hole, C13, in the topof this chamber. Thus the exit also takes place, as heretofore. bothabove and below the piston. l

D is the part called the pistou It is hollow and its end abuts oii thesemi-cylindrical Wall of the working-chamber. The piston is alsocontrolled by the block E, fitted into the hollow or slot formed throughthe piston, and by a central fixed post or stud, F, which passes throughthe block.

lAs seen in Fig. 4, the piston has just terminated its radial movementand is about to commence its rotary motion. It is lying against the wallof the inlet-chamber C3, and the water is able to penetrate, by means ofsmall ports provided in the piston, from the apertures Cz and O7 inbetween the piston and the wall. The pressure at which the water issupplied causes rotary movement of the piston. As the piston travelsround one end -is kept in contact with the curved Wall of theworking-chamber by the other end abutting in thc cavity at C1".

the piston the water in front of it is swept out During the movement ofof the workingchamber through the apertures CB andO". This goes on untilthe one end of the piston in the last part of its rotary movement comesto abut upon the incline C, and at the same time the other end of thepiston, which is beveled of at D', escapes from the cavity CH.. Thepiston then for a short distance has a compound movement.,` It movesradially while it finishes its travel around the stud or post F. Theradial traverse of the piston is caused, as before, by the entrance ofwater into the interior of the piston from the ports C2 and C7 on oneside of the stud or post F, while on the other side water is eX- pelledfrom it by the ports Cs and C, but now the ports are well open to theinterior of the piston before the flow from them in the working-chamberis checked.

The arrangement above described, it will be observed, admits oftheentire body of the nieter being removed Whenever necessary withoutbreaking any of the service-connections. This having been done, a newbody can be -inserted and the case again closed. The arrangement alsopossesses other advantages, to

which attention has been directed.

I claimv y 1. The combination of the casing A with its passages A andA2, the cover B, provided with the cavity and the delivery-passage B',the body C, having the holes at top and bottom and containing theworking-chamber and forminga partition between the cavity in the casingand the cavity in the cover, and the hollow or slotted radially-movingand rotating piston `D in the working-chamber, these parts being andoperating substantially as set forth, whereby Water entering at A intothe annular space between the casing and the body descends around thebody, turns inward, asceiids by the holes in the bottom of the bodyiiito the working chamber, imparts radial and ro` tary motion to thepiston, passes-out by the holes in the top of tlie body into the cavityof the cover, and thence away by the passages in the cover and casing;

2. The combination of the body C with its inlet and outlet passages andits workingchamber 0*, the hollow piston D, the post or stud F, and theincline G15, causing radial inotion of the piston before the terminationof its rotary motion, substantially as described.

' VALTER G. KENT.

Witnesses:

WALTER J. SKERTEN, G. F. WARREN, v Both of 17 Grccechurch Street,London, E. 0.

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